John, a Security Analyst Working for LeoTech Organization, Was Asked

John, a security analyst working for LeoTech organization, was asked to perform penetration testing on the client organizational network. In this process, he used a method that involves threatening or convincing a person from the client organization to obtain sensitive information. Identify the type of penetration testing performed by John on the client organization?

A) Wireless network penetration testing
B) Social engineering penetration testing
C) Mobile device penetration testing
D) Web application penetration testing